当我在DataGridTemplateColumn.CellTemplate中使用TextBox时，不会触发DataGrid.BeginningEdit事件 [英] DataGrid.BeginningEdit event not firing when I use TextBox in DataGridTemplateColumn.CellTemplate

问题描述

我想在数据网格中显示数据。只能编辑一列中的某些单元格。因此，为此，我为一个列定义了Column模板，如下所示：

I want to show data in data grid. And only some of the cells in a column can be edited.So, for this purpose I defined the Column template for one column as shown below:

<DataGridTemplateColumn>
  <DataGridTemplateColumn.CellTemplate>
    <DataTemplate>
      <TextBox IsReadOnly="{Binding IsReadOnly}"  BorderThickness="0" Text="{Binding Value, UpdateSourceTrigger= LostFocus}"></TextBox>
   </DataTemplate>
  </DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

因此，根据模型对象的只读属性，单元格是否可编辑。效果很好。但是现在我想在用户开始编辑单元格时执行一些操作，因此我为DataGrid创建了BeginningEdit事件的处理程序。但是该事件处理程序没有被调用。我用DataGridCell替换了TextBox。事件处理程序被调用，但我无法编辑单元格值。因此，如何解决此问题。

So, depending upon the read only property of the model object, cell will be editable or not.This is working great.But now I want to perform some operation when user starts editing the cell, so I created a handler for the BeginningEdit event for the DataGrid.But the event handler is not getting called.I replaced the TextBox with DataGridCell.Now, the event handler is called, but I can't edit the cell value.So, how do I solve this issue.

推荐答案

当单元格进入编辑模式时，即在发生 BeginningEdit 事件时，将应用单元格编辑模板，因此您应该添加您的 TextBox 对此：

It is the CellEditingTemplate that is applied when the cell is put into edit mode, which is when the BeginningEdit event occurs, so you should add your TextBox to this one:

<DataGridTemplateColumn>
    <DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding Value}"></TextBlock>
        </DataTemplate>
    </DataGridTemplateColumn.CellTemplate>
    <DataGridTemplateColumn.CellEditingTemplate>
        <DataTemplate>
            <TextBox IsReadOnly="{Binding IsReadOnly}"  BorderThickness="0" 
                     Text="{Binding Value, UpdateSourceTrigger= LostFocus}"></TextBox>
        </DataTemplate>
    </DataGridTemplateColumn.CellEditingTemplate>
</DataGridTemplateColumn>

这篇关于当我在DataGridTemplateColumn.CellTemplate中使用TextBox时，不会触发DataGrid.BeginningEdit事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！